** Description changed:
[impact]
networkd fails to bring up networking on systems with long hostname
[test case]
setting the hostname:
$ sudo hostnamectl set-hostname
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
then reboot and check the networking.
[regression potential]
- TBD
+ as this adjusts logging and certain error handling while performing
+ dhcp, any regression would likely cause dhcp failure.
[scope]
- This is reproducable only on Bionic.
+ this is fixed by upstream commit
+ a8494759b4f14af5337391727ba295ab708b92f9 (along with some associated
+ commits around it), which is included starting in v240, so this is
+ included already in Eoan and later.
- [other info]
+ This is needed in Bionic and Xenial.
- original description:
- ---
-
+ [original description]
1) ubuntu version
# lsb_release -rd
Description: Ubuntu 18.04.3 LTS
Release: 18.04
2) package version
# apt-cache policy systemd
systemd:
Installed: 237-3ubuntu10.31
Candidate: 237-3ubuntu10.31
Version table:
*** 237-3ubuntu10.31 500
500 http://mirrors.digitalocean.com/ubuntu bionic-updates/main amd64
Packag
es
100 /var/lib/dpkg/status
237-3ubuntu10.29 500
500 http://security.ubuntu.com/ubuntu bionic-security/main amd64
Packages
237-3ubuntu10 500
500 http://mirrors.digitalocean.com/ubuntu bionic/main amd64 Packages
3) I expect the network to come online correctly regardless of how long
the hostname is. This is what happens with both 14.0 and 19.0 (I tested
the same behavior with both of them).
4) the external network interface fails to be configured and is stuck in
a (pending) state as reported by networkctl status -a
setting the hostname:
# hostnamectl set-hostname
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
after rebooting the machine, it no longer has network access.
# journalctl
Feb 06 19:29:41
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf systemd[1]:
Starting Wait for Network to be Configured...
Feb 06 19:29:41
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
systemd-networkd[605]: eth0: Link state is up-to-date
Feb 06 19:29:41
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
systemd-networkd[605]: eth0: found matching network
'/run/systemd/network/10-netplan-eth0.network'
Feb 06 19:29:41
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
systemd-networkd[605]: sd-netlink: callback failed: Invalid argument
Feb 06 19:29:41
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
systemd-networkd[605]: lo: Link state is up-to-date
# networkctl status -a:
● 1: lo
Link File: /lib/systemd/network/99-default.link
Network File: n/a
Type: loopback
State: carrier (unmanaged)
Address: 127.0.0.1
::1
● 2: eth0
Link File: /run/systemd/network/10-netplan-eth0.link
Network File: /run/systemd/network/10-netplan-eth0.network
Type: ether
State: off (pending)
Path: pci-0000:00:03.0
Driver: virtio_net
Vendor: Red Hat, Inc.
Model: Virtio network device
HW Address: ae:4d:91:1c:e8:86
DNS: 67.207.67.3
67.207.67.2
and to bring up the network correctly, set the hostname to something
shorter
# hostnamectl set-hostname asdf
# systemctl restart systemd-networkd
# networkctl status -a
● 1: lo
Link File: /lib/systemd/network/99-default.link
Network File: n/a
Type: loopback
State: carrier (unmanaged)
Address: 127.0.0.1
::1
● 2: eth0
Link File: /run/systemd/network/10-netplan-eth0.link
Network File: /run/systemd/network/10-netplan-eth0.network
Type: ether
State: routable (configured)
Path: pci-0000:00:03.0
Driver: virtio_net
Vendor: Red Hat, Inc.
Model: Virtio network device
HW Address: ae:4d:91:1c:e8:86
Address: 10.17.0.5
157.245.210.250
fe80::ac4d:91ff:fe1c:e886
Gateway: 157.245.208.1 (ICANN, IANA Department)
DNS: 67.207.67.3
67.207.67.2
** Also affects: systemd (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: systemd (Ubuntu Bionic)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu Xenial)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu Xenial)
Importance: Undecided => Medium
** Changed in: systemd (Ubuntu Xenial)
Status: New => In Progress
** Changed in: systemd (Ubuntu Bionic)
Status: Confirmed => In Progress
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https://bugs.launchpad.net/bugs/1862232
Title:
Long hostname causes networking setup to fail
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